took out my backup srx this weekend and had a bog ive seen threads before so you can give it a try. bog was strange, only once in a while. ran perfect from a stop but when you let off the gas it bogged and you couln't get back on it for about 15 sec. ripped the carbs of cleaned and rebuilt, still bogged, cleaned and sanded power valves and made sure cable wasnt broke, still bog. disconnect tors, throttle and choke were set right. pulled out a tester and the kill switch was the problem. was shutting the sled down but it would restart itself. just unplugged it and no more problems never heard of it but that was the problem HOPE IT HELPS SOMEONE ELSE!!!!!